Slider for separable fasteners



Oct.16,1934. v. Puc 1,77,52s

. SLIDER FOR SEPARABLE FASTENERS Filed May 20. 1952 2 Sheets-Sheet l Oct. 16, 1934. 'VX Puc 1,977,528

SLIDER FOR SEPARABLE FASTENERS Filed May 20. 1932' 2 Sheets-Sheet 2 Patented Oct. 16, 1934 ATENT iCE Wattles Ca, Frague-Vrsovice, Ezechoslo- Application May 20, 1932, Serial No. 4512,55? Kn @zeehosiovafia May 22, 1231 IL Ullaim.

This invention relates to sliders for separable fasteners and its object is to provide an easily slidable and. lockable fastener slider having a double guide. Practice has shown that sliders of this type must have besides a good guide, also a minimum frictional area to give to connecting members of a separable fastener a reliable and easy guide. Such property must especially be true of sliders intended for use in fasteners the connecting members of which are provided with a rubber covering.

The principle of the novel slider construction resides in that the slider wedge is fitted with guiding grooves for fastener connecting members which guiding grooves are formed either by milling or stamping or pressing operation. Milling is taken into consideration in case the said slider wedge is made of solid material. When the slider wedge is hollow another shape of guiding grooves is then preferred in which both flaps of the wedge are at their upper and lower ends extended to form two short and contiguous guiding lugs the outer edges of which are bevelled. Another feature of the present invention resides in the fact that the slider may be locked in any desired position by aid of an actuating member for which purpose said actuating member is of a novel construction.

The accompanying drawings show an example embodying the object of the invention, in which Fig. 1 shows the slider blank,

Fig. 2 is a side view of the complete slider,

Fig. 3 is a top view thereof,

Fig. 4 is a sectional view taken on line II in Fig. 1,

Fig. 5 shows an actuating member,

Fig. 6 is a longitudinal section through the actuating member taken on line IV--IV in Fig. 5,

and

Fig. 7 is a vertical section taken on line H--H in Fi 2.

Fig. 8 shows a modified construction with guiding grooves formed by milling operation.

Fig. 9 is an elevation of my improved slider showing the actuating member in such position in full lines that the camming portions thereof are in fully released position and showing said actuating member in other positions in dotted lines.

Referring to Fig.1 the slider body stamped from sheet metal consists of front and back wings 1, 2 which are secured together by a bridge 3 constituting a wedge. The two wings are substantially of a similar form, only the front wing 2 has (Ell. 24-295) upwardly at right angles therefrom (Fig. 2) Moreover the back wing 1 has two elongated openings 8, 8' the purpose of which will be hereinafter explained. Further the front and back wings 1, 2 have each provided therein a pair of countersunk openings 11, 11, 12, 12 to receive studs. Symmetrically shaped bridge 3 has on each side thereof a pair of studs 6, 6' which latter on completion of stamping operation will be inserted into the openings 11, 11, 12, 12 and secured to the wings by riveting. Centrally in the bridge 3 is'disposed a square opening 7 which serves for securing one end of a yoke 13. l As has been hereinbefore stated the space between the wings is greater than that in previous sliders. To secure necessary guiding for the connecting members of a separable fastener the two fiapsoiv the bridge 3 have on each end thereof a pair of guiding lugs 4,4 the upper edges of which have inclinations 5, 5'. The position which the guiding lugs will occupy on completion of the stamping operation is shown in Figs. 2 and '7. The space I: between the lower and upper guiding lugs therefore exactly corresponds to the height of the projecting portions of the fastener connecting members, corresponding to the width of the guiding groove in the wedge. Fastener connecting members are therefore guided at their interengaging ends only, on which interengaging ends projections and recesses are provided in known manner. In the embodiment according to Fig. 8 the slider wedge is in turn solid. so that a double guide is already attained by milling out the grooves ii.

The slider is termed herein as having a double guide, because it is so arranged that the front and back wings of the slider receive and guide the rubber covering of the connecting members at the top and bottom and constitute one guide yoke 13 the one end of which is inserted through the opening 7 in the wedge 3, while its other end is connected with the extension 9. The actuating member 14 has in addition to the usual opening 15 an elongated opening 16 through which the actuating member is fitted on, the yoke. The two arms 18, 18 of the actuating member are partly bent upon themselves .to form camming portions (Fig. 6) and partly secured together by a cross-bar 1'7. According to Fig. 2 the intermediate portion of the yoke 13 by reason of its spring action and the fact that its ends are secured exerts pressure upon the camming ends of the actuating member through the intermediary of the uppermost edge of the cross-bar 17, so that the said ends are forced through two openings 8, 8 and against the rubber covering 19 (Fig. 2).

The actuating member 14 when in the position II indicated in dotted lines in Fig. 9 is in its fully clamped position withits cam ends 18 engaged against the rubber covering 19 and can be moved either downwardly to the fully released position designated I and then to the right as indicated by the arrow a to bring its cross bar 1'7 in contact with the extension 9 of the front wing 2 and cause the whole slider to move to the right, or it can be turned about, according to arrows c, again to fully released position III designated by dotted lines and moved to the left, arrow d, to the position designated IV in dotted lines where its cross bar 17 will come in contact with the bent portion of the yoke and thus move the whole slider to the left. To secure a safe locking of the slider in any desired position, the grasping end of the actuating member 14 is pressed upwardly, arrow 17, from the position I or turned downwardly from position III to position II, Fig. 9. In position II the uppermost edge of the cross bar 17 comes in contact with the intermediate portion of the yoke. The yoke being firm but resilient and the curvature of the bent up cam ends 18 of the actuating member being at the maximum when in such over previous sliders in that it can be regarded as a universal slider, since it may be employed with fasteners having no rubber covering.

What I claim is:

A slider for stringers having a series of rubber covered separable fasteners thereon, comprising front and back wings connected by a bridge portion, the space between the front and back wings forming a guide for the stringers, wedge shaped members having grooves formed therein, extending from said bridge portion, said grooves constituting a guide solely for the projecting portions of said fasteners, a yoke connected to the front wing, an actuating member connected to said yoke, said actuating member having locking means thereon and cooperating with said stringer to lock the slider in any position therealong by pressing on the rubber covering, the said connecting bridge member from which extends the slider wedge being made of solid material and the said guiding grooves formed in said wedge and constituting a guide solely for the projecting portions of the fasteners being formed by stamping operation and the upper and lower portions of the flaps of the slider wedge being extended to form two short and contiguous lugs with bevelled edges. v

VOJTECH PUC. 

